M
User3736774
★★★★★
2026-11-07
Product matches the online description in every detail.
![Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]](https://imgb.jgwebdy.com/Questyle-SIGMA-Pro-with-Genuine-Case-NoiseResistant-Lot-1868387.jpg)
![Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]](https://static.mercdn.net/item/detail/orig/photos/m39127573362_2.jpg?1777545504)
![Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]](https://static.mercdn.net/item/detail/orig/photos/m39127573362_3.jpg?1777545504)
![Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]](https://static.mercdn.net/item/detail/orig/photos/m39127573362_4.jpg?1777545504)
![Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]](https://static.mercdn.net/item/detail/orig/photos/m39127573362_5.jpg?1777545504)
![Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]](https://static.mercdn.net/item/detail/orig/photos/m39127573362_6.jpg?1777545504)
![Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]](https://static.mercdn.net/item/detail/orig/photos/m39127573362_7.jpg?1777545504)
![Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]](https://static.mercdn.net/item/detail/orig/photos/m39127573362_8.jpg?1777545504)
![Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]](https://static.mercdn.net/item/detail/orig/photos/m39127573362_9.jpg?1777545504)
![Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]](https://static.mercdn.net/item/detail/orig/photos/m39127573362_10.jpg?1777545504)
![Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]](https://static.mercdn.net/item/detail/orig/photos/m39127573362_11.jpg?1777545504)
![Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]](https://static.mercdn.net/item/detail/orig/photos/m39127573362_12.jpg?1777545504)
![Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]](https://static.mercdn.net/item/detail/orig/photos/m39127573362_13.jpg?1777545504)
Questyle SIGMA Pro with Genuine Case [Noise-Resistant Lot]
$299.00
$388.7
30% OFF
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6-Month Quality Warranty
Product Details
Description
Specifications
Care Guide
Purchased new in March of this year, but I'm listing it because I use other amplifiers more often. Total usage time is less than 4 hours.
This unit has been modified for noise reduction.
It is almost unused, so there are no noticeable scratches or dirt, but please check the photos before considering.
*The USB cable is not included as it is used with another device.
No smoking
No pets
Stored in a dry cabinet
Category
Headphone Amplifier / Dac
Brand
Questyle
Condition
Almost new
Shipping
Included in price (by seller)
From
Nara
Daily Cleaning: Use a soft brush or damp cloth to gently wipe away dirt. Avoid harsh chemicals. For mesh areas, use diluted mild detergent and a soft brush.
Drying: Air dry in a cool, shaded place after cleaning. Avoid direct sunlight or high heat, which can cause fading and glue deterioration.
Storage: Stuff with paper to maintain shape when not in use. Store in a dry, ventilated area to prevent mold. Rotate between multiple pairs to extend lifespan.
Usage Notes: Designed for basketball. Not recommended for hiking, long-distance running, or other specialized sports where different performance features are required.